sandflea5

What did I do wrong?

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I recently restored an old Craftsman lathe to get back to making a few plugs for myself and friends. Been about 30 years since, but happy to get back. Anyway, turned a few and searched the best ways to finish them using rattles after sealing with spar urethane thinned with turps. I let them dry about two weeks in my boiler room, primed them with Zinnser Cover Stain oil base, painted them  after 5 days with Rustoleum enamel.They looked fantastic! Waited three days and hit them with Rustoleum clear gloss,and the paint crinkled. ... Luckily I only sprayed three before I realized what had happened.Can anyone tell me what I might have done wrong? These  are going to be fishers, so I'm not looking to get involved with an epoxy finish. Do I need to wait longer before the clear coat? Wouldn't mind if a few of them came out pretty....

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I've used Rustoleum enamel on some products of mine and found that some colors do not like a second coat. I did one coat and the second coat crinkled  I was wtf ......other colors no problems .....so I just do one heavy coat. Not sure what's happening either ?? I was spraying over epoxy coating so ???

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17 mins ago, Sudsy said:

Water over oil

Use the alcohol based primer

I don't know about that. All the components appear to be oil based, clean up with mineral spirits.

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Yup, my bad

 

But the paint did not adhere to the primer which means there's a problem with the surface tensions not being compatible (there's a long thread on this where I had the same issue and had a long talk with the engineer at one of the paint companies)

Again, try the alcohol based primer

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Wait longer before clear coating or clear coat right after the color coats. The solvents in the clear are attacking the partially cured color coats. Don't ask me how I know. It also helps to spray the clear from further away so some of the solvents evaporate  before hitting the color. May sound crazy but it works.

 

Bob

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the clear coat was much stronger then the enamel paint and ate through the enamel acting like a remover....this often happens with other brands as well...but mostly when the paint is high gloss and so is the clear....they fight each other.

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22 hours ago, sandflea5 said:

Thanks fellas for the replies. Makes sense and give those a try.Let you know tomorrow how I make out...

Had better results today. Seems part of the problem with the crinkle was caused by painting gloss clear over plugs I had used Rustoleum metallic silver. Perhaps they require longer drying or cure time. But I did try spaying the gloss shortly after painting colors and all went well as SC809 advised. Thanks for all the help.

       Sam

 

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Good glad to hear it. Nothing sucks worse than doing a good job on the paint and having the clear screw it up. Been there done that.  Just don’t get the clear to heavy and it should work out fine.

 

Bob

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